You mean, other than the fact that they were forced to retract their infant seat "study", and the fact that they keep recommending the AOE to poor unsuspecting people?

This might help:
From http://www.car-safety.org/guide.html
You have to scroll down to the bottom to find this:
In addition to the fact that Consumer Reports has sometimes given advice and ratings that don't reflect best (safest) practice and that they don't always give enough information for parents to understand their legitimate warnings, there are other reasons to be skeptical of their ratings: